In 2013, CNN made this claim:
Each day - Three or more women are murdered by their boyfriends or husbands on average, according to the American Psychology Association.
Indeed, the linked APA website makes the claim:
On average, more than three women are murdered by their husbands or boyfriends every day.
Unfortunately, this statistic is unreferenced (or, at least, it's not directly referenced; there's a bunch of references, but it's not clear which the statistic might be in).
I found a similar unreferenced claim in the article 3 Women Are Killed Every Day By Their Partners ... at the Huffington Post and in the article Three Women Are Murdered by Their Husbands, Boyfriends Every Day in America at AlterNet.
Question: In the US, are three women killed each day by their male partners?